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| author | Benoît Thébaudeau <benoit.thebaudeau@advansee.com> | 2013-04-11 09:35:39 +0000 |
|---|---|---|
| committer | Albert ARIBAUD <albert.u.boot@aribaud.net> | 2013-04-12 07:55:04 +0200 |
| commit | 68fbc0e68604a3e58c6980e3d934e9741e561174 (patch) | |
| tree | 3c98ab6b0a94950a4282b1526052c713aa11b749 /board/freescale/mx53ard/mx53ard.c | |
| parent | e78b14080112af75cb287e5a6eac28f728d036ed (diff) | |
| download | u-boot-imx-68fbc0e68604a3e58c6980e3d934e9741e561174.zip u-boot-imx-68fbc0e68604a3e58c6980e3d934e9741e561174.tar.gz u-boot-imx-68fbc0e68604a3e58c6980e3d934e9741e561174.tar.bz2 | |
imx: mx53ard: Add support for NAND Flash
Add support for the Samsung K9LAG08U0M NAND Flash (2-GiB MLC NAND Flash, 2-kiB
pages, 256-kiB blocks, 30-ns R/W cycles, 1 CS) on mx53ard.
eNFC_CLK_ROOT is set up with a cycle time of 37.5 ns (400 MHz / 3 / 5) for this
board, which satisfies the 30-ns NF R/W cycle requirement.
Signed-off-by: Benoît Thébaudeau <benoit.thebaudeau@advansee.com>
Tested-by: Fabio Estevam <fabio.estevam@freescale.com>
Diffstat (limited to 'board/freescale/mx53ard/mx53ard.c')
| -rw-r--r-- | board/freescale/mx53ard/mx53ard.c | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/board/freescale/mx53ard/mx53ard.c b/board/freescale/mx53ard/mx53ard.c index 2fc8570..8d433a3 100644 --- a/board/freescale/mx53ard/mx53ard.c +++ b/board/freescale/mx53ard/mx53ard.c @@ -58,6 +58,71 @@ void dram_init_banksize(void) gd->bd->bi_dram[1].size = PHYS_SDRAM_2_SIZE; } +#ifdef CONFIG_NAND_MXC +static void setup_iomux_nand(void) +{ + u32 i, reg; + #define M4IF_GENP_WEIM_MM_MASK 0x00000001 + #define WEIM_GCR2_MUX16_BYP_GRANT_MASK 0x00001000 + + reg = __raw_readl(M4IF_BASE_ADDR + 0xc); + reg &= ~M4IF_GENP_WEIM_MM_MASK; + __raw_writel(reg, M4IF_BASE_ADDR + 0xc); + for (i = 0x4; i < 0x94; i += 0x18) { + reg = __raw_readl(WEIM_BASE_ADDR + i); + reg &= ~WEIM_GCR2_MUX16_BYP_GRANT_MASK; + __raw_writel(reg, WEIM_BASE_ADDR + i); + } + + mxc_request_iomux(MX53_PIN_NANDF_CS0, IOMUX_CONFIG_ALT0); + mxc_iomux_set_pad(MX53_PIN_NANDF_CS0, PAD_CTL_DRV_HIGH); + mxc_request_iomux(MX53_PIN_NANDF_CS1, IOMUX_CONFIG_ALT0); + mxc_iomux_set_pad(MX53_PIN_NANDF_CS1, PAD_CTL_DRV_HIGH); + mxc_request_iomux(MX53_PIN_NANDF_RB0, IOMUX_CONFIG_ALT0); + mxc_iomux_set_pad(MX53_PIN_NANDF_RB0, PAD_CTL_PKE_ENABLE | + PAD_CTL_PUE_PULL | PAD_CTL_100K_PU); + mxc_request_iomux(MX53_PIN_NANDF_CLE, IOMUX_CONFIG_ALT0); + mxc_iomux_set_pad(MX53_PIN_NANDF_CLE, PAD_CTL_DRV_HIGH); + mxc_request_iomux(MX53_PIN_NANDF_ALE, IOMUX_CONFIG_ALT0); + mxc_iomux_set_pad(MX53_PIN_NANDF_ALE, PAD_CTL_DRV_HIGH); + mxc_request_iomux(MX53_PIN_NANDF_WP_B, IOMUX_CONFIG_ALT0); + mxc_iomux_set_pad(MX53_PIN_NANDF_WP_B, PAD_CTL_PKE_ENABLE | + PAD_CTL_PUE_PULL | PAD_CTL_100K_PU); + mxc_request_iomux(MX53_PIN_NANDF_RE_B, IOMUX_CONFIG_ALT0); + mxc_iomux_set_pad(MX53_PIN_NANDF_RE_B, PAD_CTL_DRV_HIGH); + mxc_request_iomux(MX53_PIN_NANDF_WE_B, IOMUX_CONFIG_ALT0); + mxc_iomux_set_pad(MX53_PIN_NANDF_WE_B, PAD_CTL_DRV_HIGH); + mxc_request_iomux(MX53_PIN_EIM_DA0, IOMUX_CONFIG_ALT0); + mxc_iomux_set_pad(MX53_PIN_EIM_DA0, PAD_CTL_PKE_ENABLE | + PAD_CTL_100K_PU | PAD_CTL_DRV_HIGH); + mxc_request_iomux(MX53_PIN_EIM_DA1, IOMUX_CONFIG_ALT0); + mxc_iomux_set_pad(MX53_PIN_EIM_DA1, PAD_CTL_PKE_ENABLE | + PAD_CTL_100K_PU | PAD_CTL_DRV_HIGH); + mxc_request_iomux(MX53_PIN_EIM_DA2, IOMUX_CONFIG_ALT0); + mxc_iomux_set_pad(MX53_PIN_EIM_DA2, PAD_CTL_PKE_ENABLE | + PAD_CTL_100K_PU | PAD_CTL_DRV_HIGH); + mxc_request_iomux(MX53_PIN_EIM_DA3, IOMUX_CONFIG_ALT0); + mxc_iomux_set_pad(MX53_PIN_EIM_DA3, PAD_CTL_PKE_ENABLE | + PAD_CTL_100K_PU | PAD_CTL_DRV_HIGH); + mxc_request_iomux(MX53_PIN_EIM_DA4, IOMUX_CONFIG_ALT0); + mxc_iomux_set_pad(MX53_PIN_EIM_DA4, PAD_CTL_PKE_ENABLE | + PAD_CTL_100K_PU | PAD_CTL_DRV_HIGH); + mxc_request_iomux(MX53_PIN_EIM_DA5, IOMUX_CONFIG_ALT0); + mxc_iomux_set_pad(MX53_PIN_EIM_DA5, PAD_CTL_PKE_ENABLE | + PAD_CTL_100K_PU | PAD_CTL_DRV_HIGH); + mxc_request_iomux(MX53_PIN_EIM_DA6, IOMUX_CONFIG_ALT0); + mxc_iomux_set_pad(MX53_PIN_EIM_DA6, PAD_CTL_PKE_ENABLE | + PAD_CTL_100K_PU | PAD_CTL_DRV_HIGH); + mxc_request_iomux(MX53_PIN_EIM_DA7, IOMUX_CONFIG_ALT0); + mxc_iomux_set_pad(MX53_PIN_EIM_DA7, PAD_CTL_PKE_ENABLE | + PAD_CTL_100K_PU | PAD_CTL_DRV_HIGH); +} +#else +static void setup_iomux_nand(void) +{ +} +#endif + static void setup_iomux_uart(void) { /* UART1 RXD */ @@ -277,6 +342,7 @@ static void weim_cs1_settings(void) int board_early_init_f(void) { + setup_iomux_nand(); setup_iomux_uart(); return 0; } |